Separable fastener



Feb. 12 9 1924. 1,483,188 w. B. MURPHY SEPARABLE FASTENER Filed Feb-11.1922

INVENTOR' PatenteclFeb. 12, 1924.

U NIT SET A TETS? PATIENT ornc WILLIAM B. MURPHY, OFVWEEHAWKEN, new. JERSEY, nssrenonro, n-nrmncn nnn Ton MACHINE 00., on nnw YORK, N. .A. CORPORATION or. new Yon-K.

SEPARABLE rAsrEnER;

Application filed'February. 11, 1922; Serial No; 535,771.

' To all whom it may concern:

Be it known that'I, WILLIAM B; MURPHY, acitizen of the United States, residing at- Weehawken, county of Hudson, State of New Jersey, have invented acertain new and useful Separab-le Fastener, of which the followingis a specification.

Thisinventionis; an improvement in separable; fasteners, and it pertains, more particularly, to the male member or the stud of such fasteners.

In this art, the fastener comprises a fe-' male (socket) member, and a male member (or stud), said members being applied respectively to the separate parts which are to be connected? detachably bythe mutual engagement of said members.

As heretofore constructed, the male (stud) member comprises a cap and a post, but in all prior devices known to me the post under the compressive force employed in the-attachment to fabric or other mate.- rial does not follow the conformation ofthe cap. On the contrary, the posts used in prior male or stud members, have a tendency under the compressive force apphed to become upset at the base thereof, with the result that the metal of the post is so displaced as to cut the underlying layer of fabric when manufacturing that article of headwear known as, a cap, or said post under the applied compressive force may collapsein various sectional formations at the end of said post, with the result that. the post and cap composing the male (stud) member are insecurely applied to the fabric.

My invention overcomes the objections stated, and it. makesprovision for the fixed attachment of the male member to the fabric without danger of injury to an underlying layer of material such as is present in the attachment of said male member to an apparel cap, and, furthermore, provision is made for the secure attachment of the male member to material which varies in thickness or which is composed of a single layer of quite thin material or of a plurality of layers of material.

According to this invention, I employ a post the free end portion of which is so fashioned or deformed that it presents a surface of such weakened resistance that it conforms to the contour of the shell or cap under compressive force employed in the attachment to a fabric or other material.

In a practical form the post is drawnfrom metal by successive operations into a seamless tubular member closed at one end and flanged at the other end, and subsequently to such drawing of the metal the closed end of the tubular post is deformed by perforating and inturning the metal,

thus reducing the-resistanceof the metal, at

the distantendof said tubular post, to com-- 1 scription taken in connection with the drawings, where1n- Figure 1 represents dlagrammatically some'of'the stages of'the metalin drawing the same to produce a flanged tubular post prior to deforming the distant end portionthereof.

Figure Q'is a view partly in vertical section and partly in elevation of one of the dies suitable for deforming the tubular post subsequently to the operation of drawing said post from metal;

Figure 3' is aplan View, of" the tubular post' looking at the deformed end thereof:

Figure 't is avertical sectional view of a male member composed of." a shell or cap and; a tubular post mutually cooperating-- ineffecting, the rigid attachment to' appropriate ma-terial;

Figure 5 is a verticahsection through the tubular post showing the deformation of the metal at the distant end, i. e., at the portion remote to the base. A is the tubular post, shown in detail in Figures 3 and 5 and applied in Figure l, the procedure of making which is depicted in. Figures land 2. Said post comprises a tubular body portion A, a flange B, and an inturned lip C, as more particularly illustrated in Figure 5. The post is a seamless member drawn from a single piece or blank of sheet metal, and subsequent to the drawing operations the metal at the distant end portion is deformed and perforated to produce the infolded lip.

In the manufacture of the seamless post,

the metal blank is fashioned by successive drawing operations some ofxwhich' are depicted at a, b, 0, in Figure 3, the resulting product being an article conveniently referred to as a'seamless flanged rivet with one end closed by a head (Z usually arched in cross section. Subsequently to the produc tion of the rivet 0, the metal is manipulated by dies, such as E F operating to impart the desired form to the body portion A and to the base flange B. WVith the die E cooperates a punch G constituting a part of a die 9, saidpunch being adapted to enter the die E, and said punch being formed with a tapering end g. The tubular headed body of the post enters the opening of die E, and when dies E g are closed as in Figure 2 the pointed end 9' of said punchso deforms the metal of head d as to perforate said metal at h and to turn or fold the metal inwardly of the tubular post, resulting in the infolded lip C.

The tubular post fashioned as described is used in conjunction with a shell or cap h to produce the male member (stud) of a separablefastener, the assemblage of said post with the cap or shell being attended by the application of compressive force and resulting in the fixed attachment to appropriate material, such as I, Figure 4:. The shell or cap is of hollow formation, with an arched crown and a flanged base 2'.

. In applying the male (stud) member to material, the shell or cap and the post are assembled for the deformed end of said post to enter the cavity of the shell, the material being intermediate the flanges B 2' of the post and the shell, respectively. Pressure is applied in the usual manner. to force the post into the shell and for the flanges to grip the interposed material, at which time the deformed end portion of the post contacts with the inner surface of the shell, whereby the weakened metal of said post conforms to the contour of said shell substantially as depicted in Figure 4C. The post and the shell are thus mutually locked to effect the secure attachment of the male (stud) member to the material, the thickness or character of which is not a material factor forv the reason that the member of my invention is susceptible of rigid and se cure attachment to material of a thin flimsy nature or to a stiffer or heavier material in a plurality of superposed layers.

In the application of my post to the shell or cap, the metal of the post is not upset or distorted at or adjacent .the base flange, as in some prior fasteners, with the result that the fastener member is insecurely applied or the material is cut, but on the contrary, the post is expanded and the weakened metal at the distant end of said post is distorted to assume the form shown in Figure 4 so as to follow the contour of the inner surface of the shell, the expanded and distorted post being in firm contact with the innersurface of the shell, with the lip C extending inwardly with respect to the cavity of said expanded post.

Having thus fully described the invention, what I claim as new and desire to secure by Letters Patent is:

1. Ina separable fastener, the combination with a shell, of a seamless tubular post the metal at one end of which-is deformed, said post being expanded within said shell for the metal at the deformed end thereof to conform under pressure to the contour of said shell.

2. In a separable fastener, the combination with a shell, of a seamless flanged tubular post the metal at one end of which is turned inwardly, said post being expanded within said shell and the inturned metal of said post being displaced by contact with the shell to follow the contour of said shell.

3. In a separable fastener, a post comprising a tubular body, a flange at the base of said tubular body, and a lip extending in wardly of the tubular body at the end re mote to the base flange, said inwardly extending lip being weakened by perforating it.

In testimony whereof I have hereto signed my name this 2nd day of February,

WILLIAM B. MURPHY. 

